2001

7.7

2000

3.0

1976

7.5

1980

7.5

1992

0.0

1999

7.1

2004

5.8

2012

5.9

1991

5.2

1992

0.0

1994

6.8

1986

6.0

1988

0.0

0.0

1994

6.0

1996

3.0

1994

0.0